Sharp QT-CD161 Service Manual page 13

Q501
Q502
X501
27 24 32 31 23
79
76
IC501
72
CD/TUNER CONTROL
56
MICROCOMPUTER
13
20
19
6
13 17 16 10 7
TO CD SW504
SECTION
MEMORY
SW503
BAND
SW502
TUNER DOWN
SW501
TUNER UP
SW505
PRESET DOWN
TO MAIN
SW506
SECTION
PRESET UP
15
MO/ST
9
L-CH OUT
10 R-CH OUT
MPX IN
16
13 MPX VCO
VR1
VCO
18 DET OUT
+B
20 FM DET STEREO
T2
AM IF IN
FM DET
22 AM RF IN
24
AM OSC AM MIX OUT
FM IF IN
AM OSC OUT
VD3-1
TC1
L3
AM ANT.
TUNER
RX501
+B
SW702
PICKUP IN
12
13
11
14
6
5
4
3
22 23 24
SW601
MAIN
VOLTAGE
REGULATOR
IC2
LA1805
FM /AM/IF APX.
+B
+B 21
8
TUNER
7
6
GND
5
CF2
AM IF IN
AM IF
T3
AM MIX OUT
2
1
VD3-2
L4
Figure 13 BLOCK DIAGRAM (3/3)
– 13 –
AUDIO
+12V
TUNER +B
Q5
A-GND
Q6
ZD1
FM RIPPLE
+5V
FILTER
10 IF IN
11 AM IN
12 FM IN
PERIDO
IC3
TC9216P
PLL
CLOCK
14 DOUT
13 VSS
VT
1
X OUT
X1
4.5MHz
Q3
Q4
CF1
FM+B
9
VT
VD2
8
RF AMP. L2
7
Q1
T1
6
5
VT
4
VD1
3
L1
1
FM ROD
ANTENA
QT-CD161/141
OF1 6
5
4
3
2
X IN
F1
B.P.F